visual studio code is pretty good these days when you get the right extensions. I've setup my projects to be debugged with gdb with vscode as the GUI. My build system also generate a compile_commands.json to feed to clangd https://marketplace.visualstudio.com/items?itemName=llvm-vs-...

Another good project that people love to hate is eclipse, if you want a GDB powered GUI, its always worth a shot.